My hot tub water smells like vinyl plastic when the jets are running. The tub has been emptied and refilled twice and filters are new and clean. Can it be the hot water is leaching chemicals from the tubing? The smell is definitely worse when the jets are on and not too bad when I first open the lid. Also, when the jets are on high it almost looks like a soapy film; not clear bubbles like my last hot tub.